Abstract
The preparation of coal water slurry (CWS) as a new substitute for oil and the factors affecting the stability of CWS were studied in this paper. Dry method was used to prepare CWS. Dry coal water slurry refers to the preparation of CWS by grinding coal into powder, then adding water and additives, mixing and stirring. Preparation process is simple and convenient, and has low technical requirements. There are many factors affecting the stability of CWS. In this paper, the coal-water ratio, mixing time and coal particle size are selected to study, and the effects of various variables on the stability of CWS in a certain range are determined. The final experimental results show that the CWS prepared by mixing for 15 minutes with 65% water, 34% coal and 1% additive is the most stable.
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